Viewers must tune in on December 9 to find out for sure. Kensie Mills played Lily on NCIS Season 21, Episode 10 (Reef Madness). Milo Cragnotti played Young Parker. Will they return? Stay tuned!

However, after just two seasons as a full-time cast member ... Law sparked speculation she was leaving NCIS in the Season 21 finale, “Reef Madness,” in which NCIS Director Leon Vance offers ...